tc qdisc command partially broken with patch-4.14.76-77 up to patch-4.14.77-78

tc qdisc command partially broken with patch-4.14.76-77 up to patch-4.14.77-78

[astx]

tc qdisc command is partially broken after applying patch-4.14.76-77.
Applying patch-4.14.77-78 didn't fix it.

Test command:
   tc qdisc add dev eth0 root handle 1: hfsc default fffd
Kernel answer:
   RTNETLINK answers: Numerical result out of range

I have identified the problematic sub-patch out of patch-4.14.76-77 to  
be the problem:

    diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
    index 22bc6fc48311..cd69aa067543 100644

Without this small patch the above "tc qdisc" command works like a charm.

Maybe someone can have a look at it.

Best regards, Toni

Re: tc qdisc command partially broken with patch-4.14.76-77 up to patch-4.14.77-78

[Cong Wang]

On Thu, Oct 25, 2018 at 1:14 PM astx <astx@aws-it.at> wrote:
>
> tc qdisc command is partially broken after applying patch-4.14.76-77.
> Applying patch-4.14.77-78 didn't fix it.
>
> Test command:
>    tc qdisc add dev eth0 root handle 1: hfsc default fffd
> Kernel answer:
>    RTNETLINK answers: Numerical result out of range
>
> I have identified the problematic sub-patch out of patch-4.14.76-77 to
> be the problem:
>
>     diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
>     index 22bc6fc48311..cd69aa067543 100644
>
> Without this small patch the above "tc qdisc" command works like a charm.

Should be fixed by the following commit:

commit e72bde6b66299602087c8c2350d36a525e75d06e
Author: David Ahern <dsahern@gmail.com>
Date:   Wed Oct 24 08:32:49 2018 -0700

    net: sched: Remove TCA_OPTIONS from policy


Thanks.